---
title: "CMBufferQueueIsEmpty(_:)"
framework: coremedia
role: symbol
role_heading: Function
path: "coremedia/cmbufferqueueisempty(_:)"
---

# CMBufferQueueIsEmpty(_:)

Returns a Boolean value that indicates whether a buffer queue is empty.

## Declaration

```swift
func CMBufferQueueIsEmpty(_ queue: CMBufferQueue) -> Bool
```

## Parameters

- `queue`: The CMBufferQueue being interrogated.

## Return Value

Return Value A Boolean indicating whether the CMBufferQueue is empty. If queue is NULL, true is returned.

## See Also

### Inspecting a Queue

- [CMBufferQueueGetBufferCount(_:)](coremedia/cmbufferqueuegetbuffercount(_:).md)
- [CMBufferQueueGetTotalSize(_:)](coremedia/cmbufferqueuegettotalsize(_:).md)
- [CMBufferQueueGetHead(_:)](coremedia/cmbufferqueuegethead(_:).md)
- [CMBufferQueueContainsEndOfData(_:)](coremedia/cmbufferqueuecontainsendofdata(_:).md)
- [CMBufferQueueIsAtEndOfData(_:)](coremedia/cmbufferqueueisatendofdata(_:).md)